michael@0: expected = 4;
michael@0: 
michael@0: var fourth = { nextSibling: null };
michael@0: var third  = { nextSibling: fourth };
michael@0: var second = { nextSibling: third };
michael@0: var first  = { nextSibling: second };
michael@0: 
michael@0: function f() {
michael@0:   let loopcount = 0;
michael@0:   for (let node = first; node; node = node.nextSibling) {
michael@0:     loopcount++;
michael@0:   }
michael@0:   return loopcount;
michael@0: }
michael@0: 
michael@0: actual = f();
michael@0: 
michael@0: assertEq(actual, expected);